Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff0342027cb56d5…

MALICIOUS

PDF

50.4 KB Created: 2020-08-12 07:10:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c41704c1513861bb29b0e7502710a9c SHA-1: d4e17b619f553177361abfb08d77b6f143a22bb9 SHA-256: 5ff0342027cb56d56021a4f4ea4863d08eb295e11c18d52c4063e55ceddcdb5d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as a link farm for SEO purposes, with many pointing to benign Shopify URLs. However, a critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=cancionero+mexicano+letras+pdf In PDF document text
    • http://kituza.christthekinglodi.org/uploads/1/3/0/7/130739678/mafaxom.pdfIn PDF document text
    • http://toxufozu.ccswimmers.com/uploads/1/3/1/3/131381489/06a51411.pdfIn PDF document text
    • http://files.habamania.com/uploads/1/3/0/7/130776343/7999702.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/52799592571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/detedodasawiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/51727370782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/zodijozupefogel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0326/3645/files/90634037533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/purubidejurupefedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/75700233850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7746/files/gta_4_cheat_tank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/1918767916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8461/0712/files/51530003027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/pia_vs_nordvpn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/77041028297.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8710 5272 bytes
SHA-256: 9c20d948e2adebd48619930231c76e753fa6c65a0b761072fd580532ff143eb8
font_01_sfnt_off000098e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98E7 9920 bytes
SHA-256: e20af3d69c9cd0a1530df35d4280bbbe8d0a80aef1f293e34849df8fbd2b7ea2

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